Galvanizing-pot.



L. L. KNOX.

GALVANIZING Por.V APPLICATION FILED FEB Patented oet. 29, 1918;'

2 SHEETS-SHEET l.

INVENTOR WITNESSES L. L. KNOX.

GALVANIZING POT.

APPLICATION man FEB.4.1918,

Patented Oct. 29, 1918..

2 SHEETS-SHEET Z.

wn-N Esse spectively', on the lines III- III and IV-IV j Enr lLirrHEa L. KNOX,

' PANY, OE PITTSBURGH, rENNsYLvA OE BELLEVUE, PENNSYLVANIA, ASSIGNOE. To BLAW-KNOX conr- NIA, A CORPORATION OE NEW JERSEY.

GALVANIZINGr-POT.

messes.

Specification of Letters Patent.

Patenten oet. as. reis.

Application filed February 4, 1918. Serial No. 215,282.

To all whom it may concern:

Be it known that-I, LUTHER L. KNOX, a citizen of the United States, residing at Bellevue, in-the county .of Allegheny v and State of Pennsylvania, have invented a new and useful Improvement in Galvanizing' Pots, of which the following is a full, clear, and exact description, reference being had to the accompanylng drawings, forming part of this specification, in which- Figure 1 is a vertical section of a galvanizing pot embodying my invention;

Fig. 2 is a section on the line II-II of Fig. 1;

Figs. 3 and 4 are detail sections taken, re-

of Figs. 1 and 2, and fore welding;

Fig. 5 is a perspective view showing parts of the pot assembled before welding and with the reinforcing band omitted; andV Fig. 6 is a view similar to Fig. 1, but showshowing the parts bej ing' a modification.

My invention has relation to galvanizing pots, and is designed to provide a sheet metal pot having a novel construction by which it can be readily made, which will be practically seamless in its finished form, and which will be strong and durable in service.

In the construction of my improved pot, I take a sheet metal plate and bend it into U- shape, to form thereby the bottom portion 2 and two of the side walls 3 of the body of the J pot, as will be readil seen from Fig. 5. I then take' two other s eets or plates of metal 4 and flange their vertical and lower edges, as indicated at 5 and 6, so that they will fit over the open ends of the structure first formed. The flanges 5 lap over the edges of the walls, while the bottom flange 6 overlaps thelbottom portion 2. The upper edges of the portions 3 and the upper edges of the members 4 may also be flanged outwardly, as shown at f?, to form thereby a top edge flange.

The parts as thus assembled are then welded in any suitable manner, as by the watergas process, so that the overlapping portions of the members will be homogeneously united with. a thickness of the metal at the welds not greatly exceeding the thickness elsewhere. v

`In this manner, there is provided a practi-l cally seamless structure which can be readily assembled from the metal parts previously bent or pressed to shape.

In service, those portions of the walls of the pot which are adj acent to the metal level in the pot tend to deteriorate and cut away rapidly under the action. of the molten bath.

I therefore provide those Iportions of the side walls of the pot which are between the highest and lowest normal levels lof the molten' bath with a suitable reinforce. This reinforce is preferably in the form of a broadv sheet metal band which may be arranged interiorly ofthe pot, as shown at 8, 1n Fig. .1, or exteriorly of the pot, as shown at 9, in Fig. 6. This band is preferably formed from a metal plate orI sheet bent to shape, with its ends welded, and the band then welded to the body of the pot. It not only acts to unite-firmly and to strengthen the previously assembled and welded parts, but it effectively reinforces those portions of the potlwhich, as above described, are most subject to deterioration in service.

I do not'claim broadly herein the provision of a'reinforced sheet metal pot, since that forms the subject matter of my eopending application Serial No. 215,281, filed Feb ruary 4, 1918.

I claim:

1. A rectangular sheet-metal galvanizing pot having a bottom, Side and end walls, the end walls bein formed of sheets having laterally exten ing projections or anges, the flanges on the one sheet extending toward the flanges of the other sheet, each of said flanges formin part of the side walls and the bottom o4 the structure, and a U-shaped sheet overlapping the flanges on the end sheets and secured thereto, said U-shaped sheet forming the other portions of the side walls and the bottom, each joint extending around both sides and the bottom, substantially as described.

2. A rectangular sheet-metal galvanizing pot having a bottom, side and end walls, the end walls each being formed of a single sheet having angular flangesV extending therefrom, the flanges on one sheet extending toward the flanges on the other member, a U-shaped sheet overlapping the flanges of the end sheets and welded thereto, the U-shaped sheet forming remaining portions of the side walls and the bottom, said pot having rounded corners at the junctions between the Walle and the junctions between the walls and the bottom, each. joint ex tending around both the side walls and the bottom and at aI point slightly beyond where the rounded corners merge into the side walls andjthe bottom, substantially as de scribed 3 A rectangular sheetmetal galvanizing pot havingq Hat side and end Walle and a iiat bottom, there being rounded corners at the 'unctione of the vvalle and. the walls and the ottoni, each being formed of a lat sheet metal member having angular llanges extending toward the liangee on the other member, and a U-shaped sheet forming the remaining portions of the side Walle and the bottom, said sheet overlapping the end members and welded thereto, each joint between the'U--shaped sheet andthe angee on the end members being at points where the flanges merge into the fiat portions of the sidewalls 'and bottom or at a point slightly beyond said' points, substantially' as described A rectangular sheet-metal galvanizing pot, havin: a bottom, side and end walls, the end wa e each being formed of a single sheet having angular flanges extending therefrom, the vflan, .e;ee on one member extending'- toward the flanges on the other member, a' U-shaped sheet overlalping the flanges of the end members an welded thereto, and forming the remaining portions of the side walls and the bottom, said et havingI rounded corners at the junctions e- 'stantially ae deeeribed In testimony whereof, I have hereunto Laeaeee tween the walls and the junctions between the walls and the bottom, each of the jointe extending around both the s'ide walls and the bottom and at a point slightly beyond where the rounded corners merge into the Walls and the bottom, and the pot havin a broad' reinforcing band extendm aroun the side and end Walls and. secure thereto to form a reinforce for the central ortion 0f the pot., as well as a reinforce For the joints substantially as described.

' 5. rectangular sheetmetal galvanizing pot having fiat side and end walls and a Hat bottom, there bein rounded corners at the junctions of the wa le and the walls and the bottom, each being formed of a fiat sheet metal member havingv angular anges extending toward the Ranges on the other member, anoi a'U-eha )ed sheet forming the remaining ortions o the side Walls and the bottom, sai eheet overlapping the end members and welded thereto, the jointe between the U-shaped sheet and the angee on the end sheets being at points where the {iangee 'merge into the fiat portions of the eide walls and bottom or at a pointslightly beyond said pointe, and the ot having a broad reinforcing band exten in. around the side and end walls and secure thereto to form a reinforce for the central portion of the pot, as well as a reinforce for the jointe, subset myhand.

LUTHER L, KNOX, 

